The Plankton of the SeaAmerican Elsevier Publishing Company, 1966 - 426 pagine |
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Pagina 261
... hauled up to the surface vertically . Another way which was used on expeditions such as that of the Challenger was ... hauled net was modified in such a way that it could be sent down to a required depth closed , then opened and hauled ...
... hauled up to the surface vertically . Another way which was used on expeditions such as that of the Challenger was ... hauled net was modified in such a way that it could be sent down to a required depth closed , then opened and hauled ...
Pagina 262
... hauled . Sent down closed , as soon as hauling began the moving propeller operated a rod which released two bridles and caused the net to open . After a certain further period of turning on its upward haul , the propeller released a ...
... hauled . Sent down closed , as soon as hauling began the moving propeller operated a rod which released two bridles and caused the net to open . After a certain further period of turning on its upward haul , the propeller released a ...
Pagina 268
... hauled along or up without the net and then to use this rating when the instrument is placed in the mouth of a net such as the Hensen egg - net . Dr Harvey found that the flow of water into such a net does not vary much in different ...
... hauled along or up without the net and then to use this rating when the instrument is placed in the mouth of a net such as the Hensen egg - net . Dr Harvey found that the flow of water into such a net does not vary much in different ...
Sommario
PREFACE page | 13 |
INTRODUCTION | 17 |
THE FIELDS of the Sea | 43 |
Copyright | |
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adult Algae algal amphipod Antapical Antarctic Appendicularia Arctic arrow worm auxospore Biddulphia biol Biological body bottom Calanus Calanus finmarchicus called carbon cells Ceratium Chaetoceros Chaetognatha ciliated Cleve coast coastal copepods Coscinodiscus Crustacea deep water depth diameter diatoms distribution Dorsal eggs Ehbg elegans euphausid Expedition female Figure fish Fisheries flagellated floating G. O. Sars genera genus gonozooid growth Grun hauled Hensen individuals jelly-fish Laboratory larva latitudes latter layer light living lower marine medusa mentioned mouth Mysidae neritic North Atlantic North Sea Norwegian Sea number of species nutrients occur oceanic organic matter oxygen parasite pelagic peridinians Peridinium photophores photosynthesis phyto phytoplankton plankton plankton organisms plants Plate polyp population produced Rhizosolenia round Sagitta samples Sars sea water seasonal segments shell shrimps spores stage standing crop stations Steemann Nielsen surface water swimming temperature thoracic Thysanoessa tion tropical tube Uropod Ventral vertical warmer zone zooplankton